§172.133. Character of damage.
46 C.F.R. § 172.133
If a type I hull is required, design calculations must show that the vessel can survive damage at any location.
Except as provided in § 153.7 of this chapter, if a type II hull is required, design calculations must show that a vessel—
Longer than 492 feet (150 meters) in length can survive damage at any location; and
Except as specified in paragraph (d) of this section, 492 feet (150 meters) or less in length can survive damage at any location.
If a Type III hull is required, design calculations must show that a vessel—
Except as specified in paragraph (d) of this section, 410 feet (125 meters) in length or longer can survive damage at any location; and
Less than 410 feet (125 meters) in length can survive damage at any location except to an aft machinery space.
A vessel described in paragraph (b)(2) or (c)(1) of this section need not be designed to survive damage to a main transverse watertight bulkhead bounding an aft machinery space. Except as provided in § 153.7 of this chapter, the machinery space must be calculated as a single floodable compartment.
Notes, amendments, and revision history
Amendments
[CGD 79-023, 48 FR 51040, Nov. 4, 1983, as amended by CGD 81-101, 52 FR 7799, Mar. 12, 1987]
Authority
Authority: 46 U.S.C. 3306, 3703, 5115; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation 00170.1, Revision No. 01.2.
Source
Source: CGD 79-023, 48 FR 51040, Nov. 4, 1983, unless otherwise noted.
Amendments
[CGD 79-023, 48 FR 51040, Nov. 4, 1983, as amended by CGD 81-101, 52 FR 7799, Mar. 12, 1987]